Spring-plank.



I PATENT'ED DEG. 31-, 1907 R, E FRAME. SPRING PLANE. APEX-MANOR rmm JULY 8, 15m.

Applinmiou P111111 July 8 To a 1117mm '1' 1f 11m wnnrv'rn:

Be it known H1111 2 11111" citizmi of 11111 1' 11i1ed i Louis, i3 issuuri, have 111' and useiui i111111e1'0111v111 of which Hie iollmvir-g exact description, s skilled in ihe art in 11011 ii 11 make 11nd use the 15111111 10111" to the :iceeui uenyi' drawings iii 11 01' this specification, 111 1 ;1111111 Figure 1 1s 2 cross 510111111 plank in operative 1101111, pien View oi the spring pizmk; 1111 enlarged perspective view of 11110-1111 spring pienk.

This HIVHIUUII 1111;111 11 c111 ducks, 11nd the a. wide planks that 1 .1 iormedfrem 00111111111 1 As the spriiig plank has rigidit was necessary to i iong'fiangee and niiese neeessaiy to use a ing a, reduced 01' e011 *1; 1 so that when the bois were compressed the hole inside of the flanges 0f Moreover, channels of time 1105011 111311 111%:

quite expensive and their is also another very 011 11621 11111 it mids greatly to the Weighi; (1'1 As pre ousiy stated, the 11 -111..

my invention is in UIOVliiQ metal spring pie: to Withstand the st jeeted and which wiii to be used.

Ami-fiber object 11f 1 vide 2:, spring; plank ti tured at- 21 10W eost 11 1 neat apoeera nee. spring p sink 51150111 1 11" it with 1111111111111 side milly extending eon-111 Referring to the drawings the preferred form of my inve mates s piank X11111 mine 10 we b1 1 1 im'nnng 1111111 1 Patented flee. $1, 1907.

1 1111 111: and prevhlmi 111 111111111 1111 side i'iangesvcm'al 11116 9111311 111' the l 1 s i am 11111 of mink) 1111111111 1 151-1 sindie'mx at the middi e '11 wrongly 111g pienk but 1e plank 111111 1011111113 the 1 ends 1)? 111111 plank, 11s showii in ig. 1. By I vevrugepting H10 spring piank "11 the n'iann'el,

dvsci'i'md 1 1111111111 11 very vigil 1.1011111111011011 21nd 111111 114111111 presents 21, ei; 21nd 01'1111- 1 menial appearance. it 11 11s the 1,1 it, 11 11:11 011 1 1 A: 11 w M I 1) 1111.. p-uwnmr, 111 11110 11111.. miep 111 0111* 11111 than the middie portion. a 1 pre Lien viaie :1 seat i101 10 101" 011 11) iings 5, and pi'eeeed lugs 6 are the underneath side of the plank 1111c iewer 121*0'11 bars :1 ipperting formed to engn v iievc the strain @111. the rivets timfiyseeure the spin Fania t0 the etch bare. Prefez'ebiy, the s mped. cerrugation i5 is provided 21$ itsdeepesb, percion with hoies 8 1331236 permitwater to drain (iii? of the corrugation. Mon 111111 be g 51 1111! time re- A wing; pielli of this (1e31, numuiae 11. eiwepiy, li1

projections which embrace the side faces of the arch bars of a truck; substantially as described.

2. A pressed metal spring plank having an approximately V shaped corrugation extending longitudinally through the center thereof; substantially as described.

'3. A pressed metal spring plank having an approximately V shaped corrugation extending longitudinally through the center thereof, said corrugation diminishing in depth from the center towards the ends of the plank; substantially as described.

4. A pressed metal spring plank provided with a longitudinally extending corrugation, an oppositely disposed. corrugation at eacn side of the corrugation first referred to, and upwardly projecting side flanges; substantially as described.

5. A pressed metal spring plank having an approximately V -shaped corrugation extending longitudinally through the center thereof, and inverted V-shaped corrugations arranged parallel to the corrugation iirst referred to and on each side thereof, all of said corrugations being of greatestrdepth at the -middle of the plank and diminishing in depth toward the ends of the plank; substantially as described.

6. A ressed metal spring plank provided with. side flanges and a plurality of longitudinally extending corrugations which are deepest at the middle of the plank and diminish in depth towards the ends of the plank; substantially as described.

7. A ressed metal spring plank provided with sid d flanges and having a deep approximately V-shaped corrugation. and shallow inverted kl-shaped corrugations extending longitudinally through the center thereof; substantially as described.

8. A pressed metal spring plank provided with. 'u wardly projecting side flanges and longitudinally extending V-shaped corru- 'the ends of the scenes gations, one of said corrugations having an opening to permit water to drain out of same; substantially as described.

9. A pressed metal-spring plank having side flanges and pairs of pressed'lugs' which are separated from each other a sufficient distance to receive the arch bars of a truck between them; substantially as described.

10. A pressed metal spring plank provided with upwardlyprojecting side flanges and a plurality of approximately V-shaped longitudinally extending corrugations; substantially as described I 11. A pressed metal spring side flanges which increase gradually in depth from the middle toward the ends of the plank, and o positely disposed corrugations extending ongitudinally through the center of the plank; substantially as described.

12. A pressed metal springplank having side flanges which increase gradually in depth from the middle toward the ends of the plank, and oppositely dis osed corrugations extending longitudina y through the center of the plank, said corrugations being of'grcatest depth at the middle of the plank and diminishing gradually in depth towards plank; substantially as described. v

13. A pressed metal spring plank, the middle portion of which is of less width'than the-end portions thereof, shallow flanges at the sides of said plank, and oppositely disposed corrugations extending longitudinally through the center of the plank; substantially as described.

In testimony whereof I hereunto ailix my signature in the presence of two witnesses, this fifth day of July 1907.

ROBERT E. FRAME.

Witnesses: WELLS L. CHURCH, Gnonen BAKEWELL.

plank having 

